1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84412e63633cb6e9dabacaa1fe199db0de243a757fea12136192aee4e97ae2db. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3a13306-cfa4-4fef-a67f-7ff2f6b9672a.json and https://artists.proofprofile.net/proofs/artist/f3a13306-cfa4-4fef-a67f-7ff2f6b9672a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7352cb6438f411a5c05f54485f687492e71d7fe817ba6186e43d639dc36e10. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB92304648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43541f2264ee439f746809a7ac9548549cdf684f07fe3e88a0efd671ed7ab5e4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFM2368066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea4cd1645d4dd81187733382ddf8e89fc17f70d404d2da059ed65aa1dcb00d5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52451420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8a84f71df3183618c5e3f232460b5f04f6d441c31d58cfd921c1fc16ea119d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:30:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6HN2462252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4f8f0712900fa2684c1555dc13ca4c98d1ffac2ea7895cfe8679506b508b81. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB22426592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736cdfb04fa6256f3aa6645c64ef6393efe8034fee7613db31c1a3f67d97caad. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB22426594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d16f4837ab8db7cd137371c97a700fa03dcd6f041ee8716a8f8154dc4352e0. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB22426596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c96483d048610362159275fc6bc497c4d35f0ed0d552226abebb4df8639a9b4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB22426597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0c14b37648e4ada72c29b0ef1441dfd53a597454834d11a9a36465513077a7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2455660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a055b2a9b9bc7b03a0e69426dbbacbc0f84b70c390c040722c97c77cfa9438. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:46:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2461639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3207aa74248d89724e1dfdd3874c496327dad33311ba213f5109a5fa930e4707. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2513139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc328a07a760194863d535119b2dbabd9770ee8e3a151d810021f88b28eca2895. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2539093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2894bd7b9f3ea9e4ea1181defff67aefe6ace74254bd7a924c133de6a7f30c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:38:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2539096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc328a07a760194863d535119b2dbabd9770ee8e3a151d810021f88b28eca2895. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2539093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2894bd7b9f3ea9e4ea1181defff67aefe6ace74254bd7a924c133de6a7f30c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2539096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebce66509cf2b91e9d4fbfd534c78293974ed19d06587952b1487a9170d2a396. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2522255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c651c6dd1d873a1f3e896de1befe55553d55245b8e933435251c03294f42776. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2522256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338d3aa7b0465dfd2d619eac18b9b0014210d850165d38b95f7d63075a579917. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT4K42505358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4698a35304e91615e7ff708564eb2c3fdc144cd84f5d9ae2cc995936246575dc. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT4K42522144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0add3fb687177d87ad89f0159bee00d3965f9d3cc9edf61a857fdd3e58d674a7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2529911.